This page was created to possibly help others who don't understand endothermic and exothermic reactions as well as they want or need to. The basic definitions are easy to understand: Endothermic: a reaction or process which absorbs heat from its surroundings. Exothermic: a reaction or process which gives off heat to its surroundings. The problem comes in trying to state which specific examples of reactions are which, because usually a lot of things are going on at the same time.
A HillâSachs lesion, or HillâSachs fracture, is a cortical depression in the posterolateral head of the humerus. It results from forceful impaction of the humeral head against the anteroinferior glenoid rim when the shoulder is dislocated anteriorly.
Injuries are classed as either superior, towards the top of the glenoid socket, or inferior towards the bottom of the glenoid socket. A superior injury is known as a SLAP lesion (superior labrum, anterior to posterior and is a tear of the rim above the middle of the socket that may also involve the biceps tendon. A tear of the rim below the middle of the glenoid socket is called a Bankart lesion and also involves the inferior glenohumeral ligament. Tears of the glenoid labrum may often occur with other shoulder injuries, such as a dislocated shoulder.